Combined oil and gas furnace



E. A. QUINN COMBINED OIL AND GAS FURNACE Original Filed Nov. 30, 1921 II. II

INVENTOR A a QM raw ATT RNEY Reissued 6, 1925.

UNIT T TES IEDWARI) A. QUINN, or FRESNO, CALIFORNIA.

COJMIBINEJ'.) OIL AIID GAS FURNACE.

Original in, 1,432,0 7,

To all whom it may concern:

Be it known that I, EDWARD A. QUINN, a citizen of .thezUnited. States, and resident of Fresno, .in the county of Fresno and the State of California,'haveinvented new and useful Improvements in Combined Oil and Gas Furnaces,'of which the following is a specification.

My invention relates to an improved type of furnace and burner mounting wherein either oilor gas' can be'used for fuel. The object I have accomplished isv the construction of a combination furnace in which manufactured or natural-gas can be used economically as fuel, andv if it is desired oil can be substituted, and heat developed from one burner will not overheat or melt the other burner. A further object is, a gas burner construction and mounting in a furnace whereby the gas and air are most thoroughly mixed and burned, other objects will appear from the drawings and specifications which follow. I

I attain these objects as hereinafter described an'dillustratedin the accompanying drawings, in which Figure 1 is a plain view of the furnace showing the burners within the combustion chamber.

Figure 2 is an elevation partly in section along broken line a-a in Figure 1, showing the tiles in which the gas is discharged. This view also shows the location of the oil burner in relation-to the as burners. Figure 3 is a front elevation 50mg sectional line bb of Figure 1.

Figure 4 is a sectional elevation of two gas burners. Figure 5 is a detail side view of one of the tiles. Figure 6 is a cross sectional view of the tile along the line 0-0 of Figure 5. Similar reference characters refer to similar parts throughout the several figures.

Branch header 1 is connected to a source of fuel supply 2, and is supported by rods 3, 3, 3, the ends of which are supported by the furnace walls. Nipples tare connected to branch header 1 as shown more definitely in Figure 4, their ends being closed by caps 5, in order to force the gas to flow through a small hole or opening .6 in the nipple 1. A tile 7 is set over each nipple' l, a longitudinal slot 8 being provided in the side of the title 7 for the purpose of easily assembling the nipples and the tiles.

Tiles 7 are held in position by brick floor dated October 17, 1922, Serial No. 518,985, filed November 30,- 1921. Application for reissue filed September 2, 192 1. Serial No, 735,496.

14 the flame and heat thereof are reflected '12 shown in Figure 8 from which the flame V regulating the supply of gas admitted to the .abl

- described.

PATENT OFFICE.

9, said floor resting on supporting rods 3, and is preferably constructed to the tops of the tiling. On the top of floor 9 is a course of fire bricks 10 arranged to leave apertures above the openings of each of the tiles. The floor is preferably arranged on an incline which rises as it recedes from the oil burner 14; When it is necessary to use oil burner upward by said floor.

' I have placed a course of soap bricks 11 on top of the firezbricks 10, and over the openings in the tiles, thus forming an open space and heat. of the gas burners finds egress from the tiles into the furnace. Soap bricks 11 form a battle forthe'flame and gas coming out of the tiling. Openings in the floor except the openings 12 referred to are filled in with asbestos and clay or the like.

The tiles 7, 7, have a plurality of holes 13, to admit air to aid combustion. The "shutters or dampers 18 are hinged to rod or pipe 3, and are adjustable by a chain or rod 18*.

The oil burner 14: is placed in a compartment or alcove 15 at the back of the furnace, and so as to direct the flame over the soap brick bafiles 11, from which it is reflected upward. The fuel supply pipe 16 to the oil burner is supported by rods 17, 17, and is connected with a source of oil supply 26. 26 is a valve for regulating the supply of oil admitted to the burner. 2 is a valve for furnace. The combustion chamber is preferconstructed of concrete and fire brick, an the parts supported therein in a conventional manner. mixing pipes and the combustion chamber of the furnace is shown at 31 and as above the floor 9.

I claim: v

1. The combination within a combustion chamber of an oil burner adapted to direct a flame in an approximately horizontal plane a spaced distance therefrom, and a plurality of gas burners each of the gas burners being housed within a tiling arranged so the tops thereof are on an incline which rises as it recedes from the oil burner, the tops of the tiling being covered with refractory materi a1 except outlet openings for the flame generated within said tiling, substantially as 2. The combination within a combustion The tiles as 7 7, formtubes 7 the rear appiaiximate tops of the tiling, leads for,

supplying air to the interior of the tiling, substantially as described.

3. In combination With a combustion hamb a gas u ner W thin said chamber consisting of upright tubes of refractory m e -ial, me s or discharging a jet of gas Within each of said tubes, a plurality of holes through the Walls of the tubes adj acent to the position Where the gas: is discharged, said tubes being partially covered at the top with refractory material, the ing arranged so that the level of the tops of the tubes to; the rear of the furnace are lower than those near the front of the combustion chamber, and an oil burner Within the combustion chamber at end thereof adapted to throw a flame over the top of the tubes, substantialy a desc ibed. c

4, In a furnace having a combustion cham: her, a plurality of vertical mixing pipes open at the top and spaced Within the floor of said hamber, aid pipes having thei b t o open for air inletthereto, agas outIet within each of said pipes and a refractory baflie over and spaced from each of said top openings whereby the burning gas is dispersed into said chamber.

direction, said outlets and said bafiies sir tioned in successive tiers of. increasing elevation.

v A furnace structure including elements as set forth in claim 4 wherein there is also a. fuel oil burner adapted to direct a. flame horizontally Within said chamber and above said top opening.

7. A furnace structure including elements as set forth in claim 5 wherein there is also a fuel oil bumer adapted to direct a flame horizontally within said chamber and above said top opening.

8. A furnace structure as set forth in claim 6 wherein there is also a fuel oil burner adapted to direct aflame horizontally Within said chamber and above said top opening.

EDWARD A. QUINN.

including elements pipes and a refractory baffie in a relatively transverse 

